Swash plate of novel hydrostatic supporting structure

Abstract

The invention discloses a swash plate of a novel hydrostatic supporting structure. The swash plate is rotationally fixed into a closed pump through a DU bearing. The closed pump is internally providedwith a plunger sliding shoe assembly arranged around a rotation shaft of the closed pump in the circumferential direction. The swash plate is provided with a swash plate work face making contact withthe plunger sliding shoe assembly and a swash plate runway making contact with the DU bearing. An oil inlet hole is formed in the swash plate work face, and an oil outlet hole is formed in the swashplate runway. The oil inlet hole communicates with the oil outlet hole through an oil way pipeline. The lubricating oil enters from the oil inlet hole to the oil outlet and overflows, and accordinglyoil film lubrication can be formed on the swash plate runway, making contact with the DU bearing, of the swash plate. According to the swash plate, through the arrangement of the oil inlet hole, the oil outlet hole and the arrangement of a pressure one-way valve in the oil way pipeline communicating with the oil inlet hole and the oil outlet hole, and the problem about oil film lubrication betweenthe closed pump swash plate and the DU bearing is solved; and meanwhile, the swash plate runway is provided with a texturing area so that establishing of a lubricating oil film can be facilitated, and the problems of friction losses and swash plate runway abrasion are further solved.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission, in particular to a swash plate of a novel hydrostatic support structure. Background technique [0002] The early wear of the friction pair is often one of the important reasons for the failure of the hydraulic plunger pump. At the same time, the friction loss between the friction pairs is also the main reason for the reduction of the mechanical efficiency of the hydraulic plunger pump. Therefore, a reasonable design of the friction pair to form a proper lubricating support oil film can not only effectively reduce the friction loss and ensure its mechanical efficiency, but also reduce or eliminate adhesive wear. And because the gap separated by the friction pair by the oil film can pass the particles smaller than the gap value, this also effectively reduces the damage of abrasive wear. [0003] The swash plate is one of the key heart parts of the through-shaft hydraulic plunger pu...

AI Technical Summary

Problems solved by technology

The cylindrical roller bearing used in the swash plate of the closed pump solves the problems of reduced volumetric efficiency, friction loss and wear of the pump. However, due to the large difference in the bearing structure, the axial space dimension of the closed pump increases. Large, economic cost increases. At the same time, because the closed pump has a bidirectional variable function, the high and low pressure areas on the swash plate can be interchanged. If the hydrostatic support scheme of the swash plate for the open pump is adopted, the swash plate at the low pressure area will Due to different forces, the problem of excessive leakage occurs, which reduces the volumetric efficiency of the closed pump

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